has part located in output of composed primarily of liquid water atmosphere condensation process water-based cloud droplet water ice crystal aerosolised liquids mist This class refers only to mist formed by materials primarily composed of water. Mist is less dense than fog, and visibility is typically greater than one kilometre. A visible mass of water droplets or ice crystals suspended in the air at or near a planetary surface, formed when humid air cools rapidly. atmospheric aerosol